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A low-power CMOS Gm-C filter for wireless receiver applications with on-chip automatic tuning system

Adrang, H ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1109/ISCAS.2006.1693458
  3. Publisher: 2006
  4. Abstract:
  5. In this paper, a fourth-order, 3.5-MHz, low-pass elliptic Gm-C filter employing low-noise, low-voltage transconductance amplifiers is presented. A new technique to enhance the linearity of the Gm-C filter is proposed. Furthermore, the nonlinear behavior of the filter caused by nonlinear behavior of transconductors with determined input amplitude is discussed. HSpice simulation results of the 1.8-V filter in a 0.18μm CMOS process show a THD of less than 44dB for 0.6Vpp input signal and an input-referred noise of less than 45 nV/√Hz in worst case. The current consumption of each OTA is 1.5-mA. © 2006 IEEE
  6. Keywords:
  7. CMOS integrated circuits ; Computer simulation ; Microprocessor chips ; Transconductance ; Tuning ; Input-referred noise ; Linearity ; Transconductance amplifiers ; Low pass filters
  8. Source: ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems, Kos, 21 May 2006 through 24 May 2006 ; 2006 , Pages 3810-3813 ; 02714310 (ISSN); 0780393902 (ISBN); 9780780393905 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/1693458